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Class 235 > HCMT traction > Flashcards

HCMT traction Flashcards

1
Q

What is the car Consist of a HCMT unit?

A

TC-DMP-MP1-DT-MP2-DMP-TC

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2
Q

What control functions does the Train Management system have?

A

Train information system
Train Data recorder
Smoke Detention system
Electronic Access System
High capacity signalling

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3
Q

What are the Isolating cocks under the Coupler Cover?

A

Uncouple Device
Towing unit
Brake Pipe End cock
Main Reservoir End cock
Horn Isolating cock

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4
Q

Brake control module consists of?

A

Brake supply
Brake cylinder End 2
Brake Cylinder End 1
Tread scrubber (tc) / Park Brake
Sanders

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5
Q

What Reservoirs are there?

A

Main reservoirs
Surge Reservoirs ( 2 per bogie)
Brake supply Reservoirs

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6
Q

What is the Brake Supply Reservoirs purpose ?

A

Supplies compressed air to the EP valves to charge the brake cylinder

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7
Q

What is the Primary suspension ?

A

Rubber Laminated springs mounted between the axle Box and Bogie frame

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8
Q

What is the Secondary Suspension?

A

Air Suspension Springs
2 Air Bags for shock absorption

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9
Q

How many Air Suspension Isolating cocks ?

A

2

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10
Q

What is in the Auxiliary Power supply container?

A

Auxiliary Inverter
Medium Voltage box
Battery Charger

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11
Q

What does the Air supply Unit consists of ?

A

Main Air Compressor
Air Dryers
Filters

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12
Q

What is in the High Voltage Box ?

A

High Speed C/B
Harmonic wave Detection Device

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13
Q

Auxiliary Power Supplies purpose ?

A

To convert 1500vDC TO 415 v 3 phase AC to the train and Battery charger

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14
Q

Variable Voltage and Variable frequency Cabinet contains?

A

Two traction Inverter modules (1 per bogie)

Traction Control Unit

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15
Q

What does the Brake Resistor Grid do?

A

Absorbs the energy generated by the traction motor during ED braking and dissipates the heat

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16
Q

What is the Pantograph isolating cocks main function?

A

To isolate the flow of main reservoir air to the Pantograph equipment

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17
Q

What does the Medium Voltage Box do?

A

It Maintains the train line voltage which is produced by the Auxiliary inverters

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18
Q

What door systems are on the HCMT?

A

Saloon Doors
Cab Doors
Internal Fire Door
Cab Bulkhead door
Emergency Ladder and Box

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19
Q

Where is the Portable Wheelchair Ramp Located ?

A

Near doors 1+2 at the Number one end of the DMP carriage

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20
Q

What are the saloon Lighting settings ?

A

Normal
Emergency

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21
Q

Where are the Saloon Fire extinguishers located?
How can they be identified?

A

In every MP2 car(higher number) on the right hand side of door #3

Identified with a red dot

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22
Q

What are the Saloon Area isolating cocks?

A

Brake Supply
Park Brake
Pantograph

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23
Q

What are the Master Controller Positions?

A

Emy (emergency)
Max Brake
Braking Zone
Minimum Brake
Coast
Minimum Power
Powering

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24
Q

What tiles are on the Fault Panel?

A

INT smoke ( internal smoke)
EXT Smoke (external smoke)
Safety system Bypass
Flat Airbag
Locked Axle
Emergency Brake
Trip Not set

25
Q

The Safety System bypasses what?

A

Traction Interlock
Zero speed
Trip
Drivers safety device
HCS isolate

26
Q

What are the Set Speed Positions?

A

Wash
Off
Yard

27
Q

What are the Headlight switch positions?

A

Auto
High

28
Q

What is in the A side Electrical Cabinet?

A

Isolation/ override Controls
Circuit Breakers
Communication equipment
Vigilance equipment

29
Q

What makes up the electronic Access system?

A

A control Unit
Badge reader
Electric strikers

30
Q

What runs off 415V AC?

A

Bath Chargers
Air Compressors
Traction equipment Cooling Systems
HVAC cab/saloon

31
Q

What runs off 240 vAC

A

General Power Outlets (GPO)

32
Q

What Circuit Breakers fail the train?

A

Cab Activation
Traction Control
Emergency Brake Loop Power supply
Brake control Supply

33
Q

How do you reset the Safety Loop?

A

Stationary for more than 3 seconds

Remove reason for the Emergency brake

Master controller to max brake

Reverser to Neutral

34
Q

What is the Main Reservoir pressure ?

A

850-100 kpa

35
Q

Emergency Brake cylinder Pressure?

A

280-460 kpa

36
Q

Maximum Brake Cylinder pressure ?

A

250-380 kpa

37
Q

Holding brake pressure ?

A

140-240 kpa

38
Q

What is the Main Reservoir over-pressure safety valve pressure ?

A

1050 kpa

39
Q

Main Reservoir safety Loop activation pressure?

A

600kpa

40
Q

Pantograph Raise pressure?

A

Minimum of 700 kpa

41
Q

Two ways you can reset the trip are ?

A

Trip reset Switch in the ojt Panel

Pressing the trip reset plunger on the front of the trip

42
Q

What speed restriction applies to the Post trip?

A

25km is when traction will be cut.

43
Q

How long does the Post trip Speed Restriction last for ?

A

500 seconds ( 8 minutes and 20 seconds)

44
Q

How long must you be moving before using the Trip Speed Button?

A

30 seconds

45
Q

What does the High Voltage Box supply power to?

A

Traction System
Auxiliary Power system

46
Q

When is ED brake available?

A

When the train is above 3km

47
Q

Where are the Tread scrubbers?

A

Located on Tc Cars
Wheels 3+4

48
Q

What is the Holding Brake Threshold limit?

A

0.5km

49
Q

How many Saloon cameras per car?

A

4

50
Q

When will the holding Brake not release ?

A

Safety loop is energised

Brake demand is not registered

Traction demand is above threshold of 0.5km

51
Q

What does the BCU measure when Braking?

A

ED braking force present
Braking Force Required
Weight of the car

52
Q

What Cameras are on the HCMT?

A

Forward Facing Camera
Stopping Aid
Saloon
Drivers Desk
Bodyside

53
Q

What does ASDC stand for?

A

Automatic Selective Door Control

54
Q

When will the Stopping Aid Camera display?

A

Approximately 10 meters from the stopping mark

55
Q

What is the ASDC override procedure?

A

A- Announcement

S-SDN , check the cameras

D- Door, open cab door and check platform

C-Cover, lift lid and hit button

56
Q

What speed does the traction power get cut out in Yard mode ?

A

15km

57
Q

What are the 2 certificates during preparations that need to be done/completed?

A

Train Certificate
Validity Certificate

58
Q

How long does the Train certificate take?

A

12 minutes is the expected duration

59
Q

What is the function of the Brake Supple Reservoirs?

A

To supply compressed Air to the EP valves in the BCM for the brake cylinders

Class 235 (17 decks)

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